/*
 *  Copyright 2011 Arngrimur Bjarnason 
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
 

/**
 * 
 */
package org.arngrimur.deviationtable.degree;

import org.arngrimur.deviationtable.IDegree;
import org.arngrimur.deviationtable.compass.Compass;

/**
 * Factory to create instances of IDegrees depending on input
 * 
 * @author Arngrimur Bjarnason, arngrimurbjarnason@gmail.com
 * 
 */
public class IDegreeFactory {
	/**
	 * 
	 * @param degree
	 *            The degree value.
	 * @param compass
	 *            The comppass from which the value was read.
	 * @return If argument of <code>degree</code> is <code>null</code> then an
	 *         {@linkplain EmptyDegree} is returned otherwise a
	 *         {@link CompassDegree}.
	 */
	public static IDegree getIDegree(double degree, Compass compass, ReferenceDegree reference) {
		Double d = new Double(degree);
		if (d.equals(Double.NaN)) {
			return new EmptyDegree(compass);
		}
		return new CompassDegree(d, compass, reference);
	}
}
